I'm a long time Linux user and am quit used to recurring problems with DVD but I think I found something new.
System:
- 10-years old computer running Ubuntu 20.04.
- libdvdcss2 is installed to the latest version.
- All packages updated nightly everyday
Symptom: when reading any DVD, with any reader, the image appears scrambled:
So here is what I saw:
- I have the same result with almost all players: VLC, Xine, Kaffeine,
- A notable exception is Dragon player, which displays the image properly but freezes after around 30 seconds.
EDIT: With Totem player, the image is not scrambled but the videos hangs a little: it slows down for a fraction of second, then speeds up. So, better, but not ideal.
Here is the output I get when running vlc from the shell:
libdvdread: Attempting to use device /dev/sr0 mounted on /media/dabi/DVDVolume for CSS authentication
libdvdnav: Can't read name block. Probably not a DVD-ROM device.
libdvdnav: vm: dvd_read_name failed
libdvdnav: DVD disk reports itself with Region mask 0x00fd0000. Regions: 2
libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a long time, please be patient
libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000171
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x000001c0
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x000001ca
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x00354356
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x0035435b
libdvdread: Elapsed time 0
libdvdread: Found 2 VTS's
libdvdread: Elapsed time 0
libdvdnav: Using dvdnav version 6.0.1
libdvdread: Attempting to use device /dev/sr0 mounted on /media/dabi/DVDVolume for CSS authentication
libdvdnav: Can't read name block. Probably not a DVD-ROM device.
libdvdnav: vm: dvd_read_name failed
libdvdnav: DVD disk reports itself with Region mask 0x00fd0000. Regions: 2
libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a long time, please be patient
libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000171
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x000001c0
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x000001ca
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x00354356
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x0035435b
libdvdread: Elapsed time 0
libdvdread: Found 2 VTS's
libdvdread: Elapsed time 0
uint DBusMenuExporterDBus::GetLayout(int, int, const QStringList&, DBusMenuLayoutItem&): Condition failed: menu
uint DBusMenuExporterDBus::GetLayout(int, int, const QStringList&, DBusMenuLayoutItem&): Condition failed: menu
[0000561ab7d657c0] main audio output error: too low audio sample frequency (0)
[00007f9cb81b1eb0] main decoder error: failed to create audio output
[0000561ab7d657c0] vlcpulse audio output error: digital pass-through stream connection failure: Non pris en charge
[0000561ab7d657c0] main audio output error: module not functional
[00007f9cb81b1eb0] main decoder error: failed to create audio output
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/r600_drv_video.so
libva info: Found init function __vaDriverInit_1_7
libva info: va_openDriver() returns 0
[00007f9cac002760] glconv_vaapi_x11 gl error: vaDeriveImage: operation failed
[00007f9cf4054190] main video output error: video output creation failed
[00007f9cb8051120] main decoder error: failed to create video output
[00007f9cb8051120] avcodec decoder: Using G3DVL VDPAU Driver Shared Library version 1.0 for hardware decoding
[00007f9cb8051120] avcodec decoder error: hardware acceleration picture allocation failed
[mpeg2video @ 0x7f9cf4054fc0] get_buffer() failed
[mpeg2video @ 0x7f9cf4054fc0] thread_get_buffer() failed
[mpeg2video @ 0x7f9cf4054fc0] get_buffer() failed (-1 (nil))
Honestly, this output did not help me. I could not find anything relevant when searching with the various error it contains.
I think I solved all issues possibly summarized in this help: https://help.ubuntu.com/community/RestrictedFormats/PlayingDVDs
So my question is: do you have any idea about how to get my computer to read DVD correctly?
SOLUTION:
As suggested by @raj, it was a hardware failure. Changing the vidéo card solved the problem. Thanks for your help!
